Electronic cigarette



FIG. 1 is a front elevational view of an electronic cigarette showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a perspective view thereof; and,

FIG. 6 is an enlarged view of portion 6 of FIG. 5.

The broken lines in the drawings depict parts of the electronic cigarette that form no part of the claimed design. The diagonal lines indicate transparency. 

CLAIM The ornamental design for an electronic cigarette, as shown and described. 